ISO/IEC 14496-2 Technical Corrigendum 4-2010 信息技术.视听对象的编码.第2部分:可视化.技术勘误表4
时间:2024-05-26 21:20:12 来源: 标准资料网 作者：标准资料网 阅读：8756
【英文标准名称】:Informationtechnology-Codingofaudio-visualobjects-Part2:Visual;TechnicalCorrigendum4
【原文标准名称】:信息技术.视听对象的编码.第2部分:可视化.技术勘误表4
【标准号】:ISO/IEC14496-2TechnicalCorrigendum4-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-09
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1/SC29
【标准类型】:()
【标准水平】:()
【中文主题词】:声信号;代码表示;编码(数据转换);计算机制图;数据处理;编码;(数据)格式;图像处理;信息交换;信息技术;多媒体;视频信号;视觉的
【英文主题词】:Acousticsignals;Codedrepresentation;Coding(dataconversion);Computergraphics;Dataprocessing;Encoding;Formats;Imageprocessing;Informationinterchange;Informationtechnology;Multimedia;Videosignals;Visual
【摘要】:
【中国标准分类号】:L71
【国际标准分类号】:35_040
【页数】:10P;A4
【正文语种】:英语
【英文标准名称】:Durabilityofwoodandwood-basedproducts-Efficacyofpreventivewoodpreservativesasdeterminedbybiologicaltests-Specificationaccordingtouseclass
【原文标准名称】:木材和木制产品的耐久性.用生物试验测定木材防腐剂的性能.第1部分:按危险等级分类规范
【标准号】:BSEN599-1-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2010-01-31
【实施或试行日期】:2010-01-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:老化;生物测定;生物降解能力;生物分析和试验;生物试验;分类系统;耐久性;耐用性;可行性;效率;家具;危害等级;气体环境;材料试验;持久性;病虫害防治;实心木块;规范;规范(验收);试验;使用等级;木材;木基质产品;木材防腐;木材防腐剂
【英文主题词】:Ageing(materials);Bioassay;Biodegradability;Biologicalanalysisandtesting;Biologicaltests;Classificationsystems;Definitions;Durability;Effectiveness;Efficiency;Furniture;Hazardclasses;Hazards;Materialstesting;Permanency;Pestcontrol;Solidwood;Specification;Specification(approval);Testing;Useclasses;Wood;Woodbasedproducts;Woodpreservation;Woodpreservatives
【摘要】:ThispartofEN599specifiesforeachofthefiveuseclassesdefinedinEN335-1,thebiologicaltestsrequiredforevaluatingtheefficacyofwoodpreservativesforthepreventivetreatmentofsolidtimber,togetherwiththeminimumageingtestsrequiredfortherespectiveuseclass.Itprovidesthemethodforcalculatingthecriticalvalueofapreservative.Thecriticalvalueisthevaluethatshallbeusedtocalculatetherecommendedretentionofthepreservativeappropriateforspecificserviceconditions.Thecriticalvalueisnotnecessarilytherecommendedretentionortheminimumretentionlevelforthepreservative.Thewiderangeofhazards,exposureconditionsandserviceliferequirementsacrossEuropemakeitnecessarytoallowforlocalconsiderationsinthecalculationoftherequiredpreservativeretention;EN351-1providesforthecriticalvaluetobeadjustedtotakeaccountofthesefactors.ThispartofEN599isapplicabletoallwoodpreservativeproductssuppliedforapplicationinliquidformforthepreventivetreatmentoftimbers(structuralandnon-structural)againstwood-attackingfungi,woodattackinginsectsandmarineborersasdescribedinEN335-1.However,itisapplicabletoproductsforpreventivetreatmentsagainstfungicausingdisfigurement(bluestain)ofwoodinserviceifthisformspartoftheoverallpreventiveefficacyoftheproduct.ThispartofEN599doesnotnecessarilytakeintoaccountallthefactorswhichmayaffectthestabilityofactiveingredientsinpreservativetreatedwood.Thesefactorsincludeultra-violetlightandmicrobiologicalagenciescapableofdegradingcomponentsofthepreservative.Suchfactorsareanintegralpartofexposureinfieldtrialsbutaresubjecttonaturalvariationandtheirimpactisnotdirectlyassessedinthefieldtrialmethodsincludedinthisstandard.MethodsareindevelopmenttoassesstheimpactofthesefactorsbutarenotfinalisedandcannotbeincludedinthisrevisionofthispartofEN599.Becausesuchfactorscould,inservice,significantlyaffecttheactiveingredient’ssuitabilityforitsintendedpurpose,themanufacturer/producerisexpectedtoensureandbeabletoprovideevidencethatitsstability,attherecommendedretentionofthepreservativeproduct,hasbeenadequatelyassessed.ThispartofEN599isnotapplicabletowoodpreservativeproductssuppliedforapplicationaspastes,solidsorincapsuleorgaseousformbecausethesecannotbetestedwithoutmodificationofthebiologicaltestscitedinthisstandard.Itdoesnotapplyeithertowoodpreservativeproductsforremedial(curative)treatments,tothoseappliedtopreventfungicausingsapstainongreen(unseasoned)timberortothoseappliedsolelytopreventfungicausingdisfigurement(bluestain)ofwoodinservice.NOTE1ThenatureofthelaboratoryandfieldtestsrequiredinthispartofEN599todemonstrateefficacyofawoodpreservativearesuchthatthetimerequiredgeneratingthedataismanymonthsoryears,dependinguponthepropertiesofthewoodpreservativeandtheuseclassinwhichthetreatedwoodistobeexposed.Forpreservativeproductswhichhavealreadybeenplacedonthemarketwithoutsignificantformulationvariation(seeAnnexA)beforetheendof1990andwhichcandemonstratearecordofhavingbeenusedlawfullyandsuccessfullyinaccordancewithlocaltechnicaltraditionsduringthisperiod,nationalstandardsbodiesorindependentauthoritiesnominatedbythem,maydeclarecriticalvaluesforusewithintheirterritories.NOTE2Forre-testingaftermakingvariationsinproductformulation,guidanceisgiveninAnnexA.
【中国标准分类号】:B71
【国际标准分类号】:71_100_50
【页数】:44P.;A4
【正文语种】:英语
Product Code:SAE AMS5366
Title:Steel, Corrosion and Heat Resistant, Investment Casting 25cr 20ni, (Ck-20) as Cast
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat resistant steel in the form of investment castings.